Rotary valve for explosive-engines.



G. E. MEAD-r ROTARY VALVE-P011 EXPLOSIVE ENGINES.

APPLICATION FILED 00T. 6, 1911.

1,75A32. Patented 0011.111913.

ioA

DAYTON, Onto, AssIGNoR To rnn Mean 'ENGINE COMPANY, '0F

CYRS E. MEAD, F

DAYTON, OHIO, A CORPORATION OF OHIO.

ROTARY VALVE FOR- EXLOSVE-ENGINES.

LVEAL Application filed @ctooer 6, 191i.

To ait whom t may concern.'

Be it known that l, CYRUs E. MEAD, a

citizen of the United States, residing at Dayton, in the county of Montgomery and State of Chio, have invented certain new and useful in reve-ments in Rotary Valves for Explosive-ltnginca of which the following is a speoilioation, reference being had therein to the accompanying drawing.

This invention. relates to rotary valves for explosive engines more particularly to driving mechanism for valves of this character.

The object of the invention is to provide a driving mechanism in which the driving member will be so connected with the valve that the latter will be free to expand and contract and that no thrust will be exerted upon the valve by the driving member.

To this end it is a further object of the invention to mount the driving member independently or tno valve and connect the same thereto.

lt is also object of the invention to malte the eoimection between the driving member and the valve adjastable to enable the timing of the valve to be regulated.

In the accompanying drawings, Figure 1 is an end elevation of the upper portion of an 'explosive engine showing my invention applied thereto; and Fig, 2 is a sectional view, telt-en on the line m of Fig. 1.

ln these drawings I have illustrated one embodiment of my invention Aand have shown the same as applied to an explosive engine of a known construction, comprising cylinders l and having bores 2 extending longitudinally to the upper .portion thereof upon each side of the cylinder. The valve chambers communicate with the cylindere by means of` ports 3 and with the inlet and exhaust, respectively, by means of other ports 4L Mounted in each Valve chamber is a cylindrical valve 5 having throughand-through ports arranged to register at intervals with the ports of the valve chamber. These valves are rotated by means of suitable driving mechanism which is actuated from the engine shaft. In order that the valves may have what is known as a floating support Within the valve chambers, and may thus be free to expand and contract, and to eliminate all thrust between the drivin member and the valve have mounted tiie driving member upon the en Speccation of Letters Patent.

iatented 9ct. te, 1913.

Serial No. 653,l00.

gine independently of the valves and have then so connected the driving member t0 the valves as to leave the valves free to eX- V pand and contract. In that form of `construction .here showna hollow stud 6 is mounted in the end of the engine frame in alinement with each valve and is here shown as connected to the frame by screwing the same into an opening in the end thereof. rThe outer end of this hollow stud has a bearing portion 7 on which is mountcd the driving member, here shown as a worm gear 8. This driving member` isI free to rotate on the bearing portion 7I of the stud and is held against longitudinal movement in one direction thereon by means of a Harige 9 formed integral with the stud and is held against longitudinal *movement in the other direction by means of a dange 10 carried by a bushing 11 which is screwthreaded into the hollow stud 6. A valve stem or pintle 12 extends through the bushing 11 'and beyond the outer end thereof. This stem preferably fits very loosely in the bushing so as not to interfere with the free movement oit-.the valve. The end of the stem l2 is so connected with the driving member 8 that it will rotate in unison therewith. -This connection in the present instance is formed by means of a plate 13 having an angular opening 14 to receive the end of the stem 12, that portion of the stem which enters the opening 14. being angular to' hold the parts against relative rotation but to permit the stern to have longitudinal movement relatively to the plate. The plate is connected to the driving member 8 by means of screws 15 extending through the plate and into the driving member.v Preferably, the plate is provided with segmental slots 16 through which the screws extend and which enable the plate and, consequent-ly, the valve which is connected thereto to be adjusted relatively to the driving member, thereby permitting the valves to be regulatcdto time the opening and clostion and it will be apparentthat the driving mechanism is so supported that it will nnpart a rotary movement to the valve without exerting any thrust on the valve or .in

l any way interfering with the expansion and directly connected thereto and that inrthis.

manner the rotary member and the gear, which may be either a driving member or a driven member, are caused to rotate absolutely in unison without any lost motion and are so supported as to have certain movements relatively one to the other. This loose connection is, in the present instance, a sliding connection which permits of the expansion and contraction of the valve relatively to the gear. The fixed support for tho gear prevents any thrust being exerted upon thevalve.

VVhi-le I have described one embodiment of the invention and have shown the same as applied to one type of engine it will be obvious that the invention can be readily applied. to engines of various kinds and is capable' of being embodied in various mechanisms.

Furthermore, the invention is not limited necessarily to a rotary valve' but may be applied tor any rotary device which vit is desired to provide with a positive driving member and which it is also desirable should have movement relatively to that member.

lt will be understood, of course, that the terms driving member and gear as herein employed are intended to include similar devices which accomplish similar results.

will be obvious that any of the well lmown devices for transmitting power may l be substituted 'for 'the worm gear here shown and that the invention is equally applicable to all such devices. l, therefore, wish it to imderstood that l do not desire to be limited to the details ot construction shown and described, for obvious modifications will occur to a person skilled in the art.

Having vthus full-y described my invention, what l claimas new and desire to secure by Letters Patent, iszi. ln an explosive engine having a valve chamber, a valve mounted in said chamber and having movement about a longitudinal axis, a driving member mounted exteriorly on said engineindependcntly of said valve and having its axis substantially coincident with the axis of said valve, and an opera- -tive connection between said vdriving member and said valve.

2. In an explosive engine, having a. valve Qin alineincnt noz/aise chamber, a valve mounted in said chamber and having movement about a longitudinal axis, a driving member mounted on said engine independently of said valve and having its axis substantially coincident with 7 the axis of said valve, and an adjustable connection between said driving member and said valve.

3. In an explosive enginehaving a valve chamber, a valve rotatably mounted in said chamber, a rotatable driving member having itsaxis substantially coincident with the axis of said valve, a fixed support for-said driving member supported exteriorly on said engine, and a connectionl between said driving member and said valve. 4. ln an explosiue engine having a valve chamber, a valve rotatably mounted insaid chamber, a rotatable driving member, a fixed support for said driving member carried by said engine, and an. adjustable ccnnection between said driving member and said valve.

5. ln an explosiver engine having a valve chamber, a valve rotatably mounted therein, a hollow stud rigidly secured to said engine in alinement with said valve chamber, a driving member rotatably mounted on said stud, a stem rigidly secured to said valve and extending loosely through said hollow stud, and a connection between said stem and said driving member.

G. ln an explosive engine having a'valve chamber, a valve rotatably mounted therein, a hollow stud rigidly secured to said engine with said valve chamber, a driving member rotatably mounted on said stud, a stem rigidly secured to said valvevand extending loosely through said hollow stud, and a plate mounted on the end of said stem, held against rotation relatively thereto and secured to said driving member.

7. In an explosive engine having a valve chamber, a-valve rotatablyY mounted therein. a hollow stud rigidly secured to said engine in alinement with said valve chamber, a driving member rotatably mounted on said stud, a stem rigidly secured to said valve ar extending looselv through said l l and a plate mouixed on the end oi s i held against rotation relatively the adjustably connected with said member.

8. ln an'explosive engine havir@v chamber, a valve rotatably mount a hollow stud'rigidly secured to sai in alinement with said valve' char driving member rotatably mounted en stud, a stem rigidly secured to said '-f extending loosely through said ho o and a plate mounted on the end sai held against rotation relatively there having slots therein, and screws e? through said slots into said drivi'i nie l 9. ln an explosive en hav1 a valve rotatably mounted in said chamber,

- said engine in alinement with said valve and having an outwardly chamber, a gear rotatably mounted on said stud, a bushing mounted within said stud extending flange to hold said gear against outward movement, a ste carried by said valve, extending loosely t rough said bushing and. having its outer en d angular in cross section, a'plate having an angular opening to receive the end of said stem and having segmental slots on opposite sides of said opening, and screws extending through said slots into said gear.

10. The combination, with a rotary mem* ber, and a rotary driving member extending about the first-mentioned rotary member and supported independently thereof, of an operative connection between said rotary members.

ll. rlhe combination, with a rotary member, and a rotary driving member extending about the first-mentioned rotary member van supported independently thereof, ot' a" connection bet-Ween said rotary members to cause them to rotate in unison but to permit one of said members to have cert-ain movement relative to the other.

12. The combination, with a rotary member and a driving gear for said member, ot

a hollow support for said gear supported independentl et and in alinement with said member, said member having a part extending through the hollow support, and an operative connection between the projecting artof said rotary member and said gear.

13. ln an engine, a rotary member, a driving gear for said, the latter and supported independently thereof, and a connection between said rotary member and said gear `to cause said parts to rotate in unison but to permit one of said parts to have movement relatively to the other. f

14., In an explosive engine, a rotary member, a gear mounted to rotate about an axis substantially;coincident with the axis of said rotary member, means carried by said engine to support said gear independently of said rotary member, and a connection between said rotary member and said gear to cause the same te rotate in unison but to permit d one of said members to have movement relatively to the other.

iin testimony whereof, l aiiix my signature in presence of two witnesses.

CYRUS E. MEAD.

l/Vitnesses:

Hmmm" L. HAMMAKER, L. W. Janine.

member extending about- 

